Trim Tab (00180A) - Transom Anode (00127A) 

Hardware: M10-1.25 x 45mm S/S SHCS

M6 x 1mm x 25mm S/S Bolt x4

6mm Flat Washer x4

Transom plate Outboard
Length: 8”
Width: 2”
Mounting Holes: 0.5” x 0.25”

Yamaha 200-300 HP Outboard Fin/Skeg STANDARD 

Base Diameter: 4”
Threaded Mounting Hole: M10 x 1.25mm

61A-45371-00 Yamaha 200-300 HP Outboard
Trim Tab Zinc Anode

• Fits the following Yamaha outboard models:
  
  F225 4-Stroke - All Models
  F250 4-Stroke - All Models
  F300 4-Stroke 4.2L V6 - All Models
  F200TXR
  F200XA
  F200TXR
  F200XA
  225TUR
  225TXR
  L225TUR
  L225TXR
  LX225TXR
  S225TUR
  SX225TUR
  SX225TXR
  V225TLR
  LX250TUR
  LX250TXR
  S250TUR
  S250TXR
  SX250TUR
  SX250TXR

Do your products meet Mil-Spec?

Yes!  Sacrificial anodes must be impurity-free to properly work, and all our anodes are made only from Mil-Spec alloys. Our zinc anodes are also compliant to ASTM B418 Type 1.  Our Aluminum anodes conform to Mil-Spec A-24779(SH)

How much zinc do I need on my boat?

First, the larger the surface area of an anode, the higher its electrical current capacity and galvanic holding voltage.  For most boats, you want your anode surface area to be sufficient to maintain all underwater metals between -900 mV and -1100 mV relative to a silver/silver-chloride reference electrode.

Second, the longevity of a sacrificial anode is a function of its weight -- the greater the weight the longer its life.

Due to differences in water salinity, temperature, stray currents, and other external influences, you only know the right weight by actual trial.  Periodically inspect your zincs, and when they have corroded to under 50% their original weight they should be replaced.  To lengthen the replacement interval, increase the weight of zincs used.

We've designed hundreds of corrosion protection solutions for metal boats and underwater metal structures such as docks, boat lifts, and retaining walls.